Insulator.



H. R. MARKEL.

INSULATOR.

Patented Apr. 11, 1916.

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APPLICATION FILED JAN-9, |914.

UNITED STATES PATENT oEEioE.

HARLEY R. MARKEL, 0F COLUMBUS, OHIO.

i INsULATon.

Application filed January 9, 1914.

To all whom t may concern.'

Be it known that I, HARLEY R. MARKEL, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Insulators, of which thefollowing is a specification.

My invention relates to insulators and pertains particularly to theprovision of means for binding the various sections comprising theordinary type of insulator together, with a 'limited amount of playbetween their coperatin g surfaces.

My invention is particularly applicable to that type of insulator knownas knobs and is applicable in general to all insulatorsformed insections and having alining bores passing therethrough used for thepassage of the attaching nails or screws broadly stated.

In its broadest aspect, my invention comprises, in combination with thevarious sections forming the insulator, which sections are provided withalining bores for the purpose above stated, means for insertion throughthese alining bores in noninterfering position with the attaching nails,whereby the various sections are automatically locked together with alimited play between the sections. This is its preferred form, but it isobvious that the structure may be slightly modified, if desired, so thatthe locking feature is not automatic at all times.

The means I have provided for binding the various sections together,preferably takes the form of a clip somewhat resilient in its nature andcooperating with these various sections to produce the desired lockingresult. l

A further object of my invention reside in providing the locking meanswith a suitable head to entirely dispense with the use of leatherwashers in applying the insulators to their working position, if it isdesired. This I accomplish by the provision of a centrally aperturedhead, the aperture being to accommodate the passage of a nail or screw,while the burs formed around the perimeter of this aperture, are turnedup to lie on the upper surface upon which the head of the attachingdevice is adapted to rest. The bore through the insulator is madeslightly larger than the attaching device and the cushioning actionwhich results from the above-named structure when the attach ing deviceis driven home, does away with Specification of Letters Patent.

Patented Apr. 11, 1916.

serial No. 811,123.

the use of these leather washers. This feature will be more clearlypresented further on in the specification.

The preferred embodiment of my invention is shown, in the accompanyingdrawings, in which similar characters of reference designatecorresponding parts, and in which:

Figure l is a vertical section of an insulator showing my inventionapplied thereto, the two sections forming such insulatorl being inabutting relation, Fig. 2 is a similar section but showing the twosections slightly spaced apart, Fig. 3 is a vertical section of aportion of the cap of an insulator, showing the structure I have pro*ided for dispensing with the` use of washers before the attaching meansis finally driven home, Fig. l is a similar view showing the attachingstructure in its innermost position, Figs. 5,v 6 and 7 are plan, sideand edge views of one form of locking means used by me for binding thesections together, and Fig. 8 is a view in perspective of another formof attaching means embodying the same broad idea as that shown in Figs.5, 6 and 7.

It will be understood that my invention is applicable to all types ofinsulators wherein there are provided a plurality of sections havingalining longitudinal bores adapted to receive the attaching nails orscrews. I do not confine myself to any particular knownk structure andin the drawings, the insulator shown comprises a base section l and capsection 9 each having bores 3, which bores are in vertical alinement, asshown. The top face of the cap section is preferably provided with atapered-socket such as` shown at 4c, while the base section ispreferably provided with a countersunk portion shown at 5, whichcountersunk portion is also provided with a projecting shoulder G,whereby the annular groove 7 is formed. It will be understood that thetwo sections are assembled in the relation shown, whereupon my lockingmeans, to be presently described, is inserted through these aliningbores 3.

The locking means shown in Figs. 5, 6 and 7 comprise a circular headportion 8 centrally apertured as at 9, the perimeter of this aperturebeing burred and these burs bent outwardly to lie upon the upper surfaceof the head 8, as is shown at 10. Attached to this head portion in anydesired manner, in the present instance shown integral, is a dependingshank portion 1l of suitable bendable material possessing a degree ofresiliency. The lower end of the shank 11 is bent outwardly and over toassume the position shown at 12, the arm so formed being adapted tocoperate with the shoulder 6, formed in the countersunk portion of thebase member 1. It will be noted that the distance from the end of thearm 12 to the shank 11 is somewhat greater in width than the diameter ofthe bores 3, whereupon, after the clip as a whole has been inserted itsfull length through the alining bores 3, the arm 1Q- beingl slightlymoved inwardly to permit this insertion, will again spring outwardlyafter it enters the countersunk portion 5 to automatically lock the twosections together no matter what their relative positions may be. inthis manner, the two sections are locked together in a manner toabsolutely prevent their relative separation further than is permittedby the increased length of the shank of the clip over the combinedlengths oi the two bores 3. The separating movement of the two sectionsfurther than this will cause the arm 12 to engage the shoulder 6 andunder ordinary conditions, further movement apart of these sections,will be prevented. lt will, therefore be apparent that by the simpleinsertion of the clip as constructed, the various complemen tal sectionswill be held in their assembled relation, it being understood that thisis desirable because breakage will be reduced to a minimum duringshipment and further because a complete insulator will always be at handand, therefore, avoid gathering the independent pieces before using.Further, it is desirable to manufacture these insulators in someinstances other than in interchangeable sections and when this is done,the variously constructed sections forming one insulator may always hefound in one unit.

ln Figs. 3 and i. l have shown a portion oi the clip as passing througha portion of the. cap sections and further, I have shown an attachingnail 13 in its correct relative position. It will be noted that theattaching nail 13 is somewhat less in diameter than` the diameter of thebore 3 and that its head 14 rests upon the bur portion 10 ot the head 8of the clip. The tapered socket i of the cap section permits only theouter portion of the head 8 of the clip to rest in engagement and a blowon the head 14 of the attaching nail after the assumption ot' theposition shown in Fig. 3, will cause distorting of the head 8 of theclip, as is clearly illustrated in Fig. d. This distortion results in amarked cushioning action and prevents shattering of the insulatoritself, without the use of leather washers or the like, as has beencommon.

In F Si, I have shown another type oi attaching clip comprising a head15 centrally apertured as at 16 and also provided with the lours as hasbeen previously related. Depending from the underside of the head 15 aretwo wires or shank portions 17 attached to the head in any desiredmanner and whose ends are bent over to form arms, as shown at 1S. Theprinciple and general operation of this last named clip, is the same -asthat of the clip shown in Figs. 5, 6 and 7 and a detailed discussion isnot believed to be necessary.

What I claim, is:

An insulator comprising hase and cap sections having alininglongitudinal bores adapted to receive an attaching nail, and a clipadapted to pass through said bores in non-interfering position withrespect to the attaching nail to bind said sections together with alimited play between them, said clip comprising an apertured head and ashank forming locking means, said head being a fiat disk and having themetal from the apertured portion turned over to lie on its upper surfaceand around the perimeter of said aperture.

In testimony whereof I affix my signature in presence of two witnesses.

HARLEY R. MARKEL.

Vitnesses C. C. SHEPHERD, WALTER E. L. Boon.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

